KFC India — payment deducted, but showing error and not refunded yet

Address:

Durg, Chhattisgarh, 490021

I placed an order on 11 feb 2019 on kfc app and paid through google pay.
Payment was successful and amount was deducted, but it showed an error on app and order was not placed.
Then i paid for same order in cash and waited for automatic refund.
But since today, i have not received refund of 327.50 rupees.

I contacted google pay and they are saying to show upi payment id to merchant and they will refund.

Kindly help me in this